Type-writing machine.



G. I. LUNDEBERG, TYPE WRITING MACHINE.

APPLICATION FILED APB. 15.1908.

@QLEK Patented ay 18, 1909.

Mfnesses I MVen/or j By 6'. flffok/Q W UNITED STATES PATENro F eE.

CARL F. LUNDEBERG, OF HARTFORD, CONNECTICUT, ASSIGNOR TO UNDERWOOD TYPE- WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF JERSEY.

.. rvrE-wiirrme momma.

Specification of Letters Patent. Patented May 18, 1909. i

Application'filed Ap'ril 15, 1908. Serial No. 427,144

on a lever. Fig. 13 is evation ofa portion of Fig. 14 is a plan To all whom it may concern:

Be it known that I, CARL F. LUNDEB'ERG, a citizen of the United States, residing in Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Type Writing Machines, of which the following is a s ecification.

his invention relates to typewriter and other keys, and qprticularly to the-denomination keys of ta ulating mechanisms. I

" Heretofore it hasbeen proposed to provide a tabulator key with a character disk covered by a shutter, and to revolve the disk to ex pose different characters through the shutter, thereby enabling a set of such keys to be used both when it is desired to insert. punctuation marks on the typewriter between the groups of denominations, and also when it is desired to omit such punctuation marks and increase the denominational capacity of the set of keys. 7

The principal object of the present inven' tion is to provide a simple, inexpensive'and readily applied device for shifting the character or .other disk in a key, to change-the reading of the key.

According to my present improvements, the character disk is mounted in a key-cu and provided with a stem which exten s down below the keyand projects therefrom, and carries at its lower en a button whereby the character disk can be turned to cause different characters thereon to be exhibited through the overlying shutter. Other features and advantages will herein after appear.

' In the accompanying drawings, Figure 1 is a diagrammatic plan 01 a setof tabulator keys provided with my improvements. Fi 2 shows how someof the keys may be adjusted to change thedenominations represented thereby. Fig. 3 shows a key-cup and aglass cover contained therein. Fig. 4 is .a shutter. Fig. 5 is a character disk with its stem and button. Fig. 6 is a plan of a keycup, and Fig. 7 a sectional elevation thereof. Fi 8 is a buttonfor adjusting the character .dis Fig. 9.is a part-sectional view of the key mounted upona key lever or carrier. 50 Fig. is a sectional Iplan taken at about the line a:-a: of Fig. 9. i 11 is aplan omitting the glass cover and'the ey cap. Fig. 12 is a sectional plan to illustrate the manner of supporting the key u a lagrammatic side e a tabulating mechanism. of the keycup inverted.

The denomination key is mounted upon the front end of a lever '1, which carries at its rear end an upstanding rod 2, formed at its top with a' denomination stop 3, to engage a column sto 4 carried upona rack 5 provided u on t e usual carriage.

- The ey consists princi ally of a cup 6, formed with a neck 7 whidh is fitted tightly in an eye 8, the latter fixed by a screw 9 upon the front end of the lever 1; the neck having a shoulder 10 to rest upon the top of the eye.

A character disk 11 fits in a recess 12 in the cup 6, the recess-being the hollow or bowl of the cup. Fixed to the character disk and extending down therefrom is a stem 13, which projects below the bottom of the neck .7, and at its projecting end carries a button lower secure thereto. By means of said button the stem, and consequently the dsk 11, may be rotated to causeeither set of characters thereon,.seen at Fig. 10, to appear throug ,up er and lower apertures 16, '17, formed in a s utter 18 overlying the character disk, so thatthe keys may be caused to.- read either as at Fig. 1 or as at Fig. 2.

A compression spring 19 is-coiled around said stem 13, and bears up against the under side of the character disk 11, and at its lower end bears against the bottom of a recess 20 formed in the bottom of the key-cup. This spring holds up a detent in the form of a projection 21'formed u on the top of the button 14, in either one o a pair of crossed radial notches or seats 22, 23 (Fig. 14,) formed in the bottom of the neck 7. By this means the spring is enabledto hold, the character disk yieldingly against accidental rotation.

The character disk 11 is formed with a recess 24 extending around a ortion of its ed e, and a projection 25 is ed ina side 'al of the cup 6 to enter said recess 24, to limit the rotation of the disk-11 to a quarter of a turn.

Theshutter 18 is formed on its opposite edges with nibs 26 to fit in notches 27 cut in the rim of the key-cup, to prevent turning of said shutter or disk. It Wlll be seen that the or other finger piece 14, which fits upon the ortion 15 of the stem and is rigidly hso I Oillgt sai latter, which is of greater diameter than the disk 11, fits in a recess 28-formed inthe top of the key-cup. Also fitting in the recess 28' is a glass or other transparent disk 29, over which catches a flange 30-formed upon the top of a cap 31? which is fixed upon-the keyl and extends to the bottom thereof. will thus be seen that the denominationof the key can be readily changed by simply turning the button 14. The: latter may "be either pulled down to release the'd'etent 21 before rotation, or it may be rotated forcibly to cam the said detent down from thenotch. Thus it will be seen'that the adjustable or manipulatable member is situated below the key and out of the way, where it is not'liable. to become accidentally turned; while the'exposed parts at the upper portion of the key are'fixed to the lever, and hence are not liable to become accidentally turned by'the finger striking the key.

arlations may be resorted to withinthe' scope of the invention, and portions of the,

im rovements may be used-withoutothers.

aving thus described my invention, I claim:

1. A changeable character key comprising a key-cup having a neck, and a character.

, stem.

disk in. the cup and having a stem projecting below the neck for manipulation.

2, A changeable character key comprising a cup havin a neck, a revoluble character disk within t e cup, a stem upon the characterdisk andprojecting down from said neck, and a button upon the projecting end of said 3. Achangeable character key comprising a cup having a neck, a character disk 1n said cup, a shutter over said disk, a spring to lift said disk, a stem extending from said disk down through said neck and provided with a finger )iece, and a detent for said disk.

4. A c angeable character key comprising a cup having a neck, a character disk in said cup, a shutter over'said disk, a spring to lift said disk, a stem extending from said disk down through said neck and provided with. a finger piece, and a detent for said disk;

said detent in the form of a projection containing a character disk, said disk having a stem projecting through the bottom of the key-cup and having a button or finger piece whereby the disk may be rotated, and a shutter' over said disk.

7. A changeable character-key comprising a cup ha'vi 'aneck, a stem extending down through sai neck and provided therebelow vwith ';a button, a revoluble character disk secured tothefupper end of said stem, means to limit the rotation of said disk, a shutter over said disk, as ring to'lift the disk, and a detent releasab e by a downward pull upon the button.

' 8h A changeable character-key comprising a'cup havin a'neck, a stern extending down through sai neck and provided therebelow with a button, a re'voluble'character disk secured t'othe upper end of said stem, means to limit the :rotation of said disk, a shutter over said disk, a s ring to lift the disk, and a detent releasable a downward pull upon the button; said detent in the form of a projection carried bythe button to engage either'of-two radial notches provided upon the bottom of the neck. -9. Achangeable character-key comprising a cu-phavin a neck, a stem extending down through. sai neck and rovided therebelow with a button, a revo uble character disk secured to the upper end of said stem, means over said disk, a detent releasable by a downward pull upon the button; said detent in the form of a projection carried by the buttonto engage either of'two radial notches provided upon the bottom of the neck; and a spring coiled around the upper part of said stem and bearing up against the bottom of said disk and seated in a recess formed in the bottom of the key-cup.

10. A changeable character-key comprising a cup havinga neck, a stem extending down through said neck and rovided therebelow with a button, a revo uble character disk secured to the upper end of said stem,

means to limit the rotation of said disk, a shutter over said disk, a transparent disk over said shutter, and a cap upon said; cup and having a flange to secure said transparent disk. I 11. A changeable character key comprising a keyscup having a neck, a character disk in the cup, a shutter disk over said'character disk, and a stem in said neck and connected to one of said disks and projecting below, the neck for manipulation to turn the'disk.

- 12. The combinationof a support, a char acter key carried upon said support, a finger iece beneath said support, and means with m the key and operable by said finger piece to change the character upon the key.

13. The combination of a lever provided with an eye, a key-cup having a neck held b said eye, a character disk and a shutter dis Within the key-cup, and a finger piece below said eye and connected to one of said disks to turn the same.

l4:. The combination of a lever rovided with. an eye, a key-cup having a necl held by said eye, a character disk and a shutter disk I on its upper face a projection to form a de- 45 Within the key-cup, and a finger piece below said eye and connected to one of said disks to turn the same; said neck having a shoulder to rest u on said eye.

15. T e combination of a key-cup, a disk within the cup and having a recess extending around aportion of its edge, a stop fixed in said cup and extending within said recess to limit the rotation of the disk, and a finger piece to rotate the disk.

16. The combination of a key-cup having a neck, a disk Within the cup and having a recess extending around a portion of its edge, a stop fixed in said cup and extendin within said recess to limit the rotation of t e disk,

and z'r finger piece mounted below said neck and connected to said disk by means of a stem.

17. AL changeable character key comprising, in combination, a key-cup having in its rim a circular recess in which a shutter disk is fitted, said disk having a nib to fit in a slot formed in the rim of the cup to prevent turning of the disk, a transparent disk seated in said recess upon said shutter disk, a cap fitting upon said cup and having a flange to catch over the transparent disk, a character disk fitting in a smaller recess in said rim below said shutter disk, said character disk having a recess extending around a portion of its edge, a stop fixed in the cup and extending within the edge of the recess to limit the revolution of the character disk, a neck upon said key-cup, a stem fixed to said character disk and extending down through said neck, a compression sprin around the upper portion of said stem and caring up against said character disk and seated in a recess formed in the bottom of said cup, a lever or carrier provided with an eye in which said neck is fitted, said neck having a shoulder to rest upon said eye, and a button secured upon said stem below said neck and having tent to engage either of two radial notches formed in the lower face of said neck.

18. A changeable character key co1nprising, in combination, a key-cup having in its rim a circular recess in which a shutter disk is fitted, a transparent disk seated in said resaid cup and having a flange to catch over the transparent disk, a character disk fitting in said rim below said shutter disk, a neck upon said key-cup, a stem fixedto said character disk and extending down through said neck, a spring, and a button secured upon said stem below said neck and having on its upper face a projection to forma detent to engage either of two radial notches formed in the lower face of said neck.

19. A changeable character key comprising, in combination, a key-cup having in its rim a circular recess in which a shutter disk is fitted, a transparent disk seated in said recess upon said shutter disk, a cap fitting upon said cup and having a flange to catch over the transparent disk, a character disk fitting in said rim below said shutter disk, said character disk having a recess extending around a extending within the edge of the recess to limit the revolution of the character disk, a neck upon said key-cup, a stem fixed to said character disk and extending down through said neck, a compression spring around the upper portion of said stem and bearing up against said character disk and seated in a recess formed in the bottom of said cup, a lever or carrier provided with an eye in which said neck is fitted'ffind a button secured uponsaidstem below said n'eckand having'a 'detent.

CARL F. LUNDEBERG. Witnesses:

W. M. DYORKMAN,

L. D. BROUGHTON.

cess upon said shutter disk, a cap fitting upon portion of its edge, a stop fixed in the cup and 

